Toyota Yaris: Sfi System / Check For Intermittent Problems

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS

HINT:

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

Clear the DTCs.
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Change the ECM from normal mode to check mode using the GTS.
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Perform a simulation test.
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Check and wiggle the harness(es), connector(s) and terminal(s).
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How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS NEXT 3...

Basic Inspection

CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Dtc Check / Clear

DTC CHECK / CLEAR HINT: DTCs, which are stored in the engine stop and start ECU, can be displayed on the GTS. The GTS can display confirmed and pending DTCs. Some DTCs are not stored if the engine stop and start ECU does not detect the same malfunction again during a second consecutive driving cycle...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT AIR CONDITIONING PRESSURE SENSOR (a) Check the wire harness. (1) Disconnect the A51 air conditioner pressure sensor connector. (2) Disconnect the H25 air conditioning amplifier assembly connector. (3) Measure the resistance according to the value(s) in the table below...